我仅仅是想要个定位，接入个SDK做卵
下面网上找的一个工具类，可用。。。

获取位置权限：

 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

工具类：

/**
 * Desc: 简单定位工具类
 * Created by lisheny on 2018/9/3 0003.
 */

public class LocationUtil {
    private static String TAG = "LocationUtil";
    public static void getCurrentLocation(Context context, LocationCallBack locationCallBack){
        if (locationCallBack == null){
            return;
        }
        if (context == null){
            locationCallBack.onFail("请确保传入的参数context不为null");
        }
        //如果系统版本号在23及其以上则检查权限
        if (Build.VERSION.SDK_INT >= 23 &&
                ContextCompat.checkSelfPermission(context, Manifest.permission_group.LOCATION) == PackageManager.PERMISSION_GRANTED){
            locationCallBack.onFail("请确保已经获取定位权限");
        }
        //获取LocationManager对象
        LocationManager locationM = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
        //实例化MyLocationListener
        MyLocationListener locationListener = new MyLocationListener(locationM, locationCallBack);
        //配置Criteria耗电低
        Criteria cri =  new Criteria();
        cri.setPowerRequirement(Criteria.POWER_LOW);
        // 获取可用的provider,第二个参数标识 provider是否可用.
        String bestProvider = locationM.getBestProvider(cri,true);

        if (!TextUtils.isEmpty(bestProvider)){
            Log.e(TAG,"bestProvider = "+ bestProvider + "可用");
            locationM.requestLocationUpdates(bestProvider,0,0,locationListener);
        }else if (locationM.isProviderEnabled(LocationManager.NETWORK_PROVIDER)){
            Log.e(TAG,LocationManager.NETWORK_PROVIDER + "可用");
            locationM.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,0,0,locationListener);
        }else if(locationM.isProviderEnabled(LocationManager.GPS_PROVIDER)){
            Log.e(TAG,LocationManager.GPS_PROVIDER + "可用");
            locationM.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,locationListener);
        }else{
            //定位不可用，提示打开GPS
            Log.e(TAG,"定位不可用，提示打开GPS");
            locationCallBack.onFail("无可用的定位方式，请打开GPS");
        }
    }

    /**
     * LocationListener 的实现类
     */
    private static class MyLocationListener implements LocationListener {
        private LocationManager mLocationManager;
        private LocationCallBack mLocationCallBack;

        public MyLocationListener(LocationManager locationManager, LocationCallBack locationCallBack) {
            this.mLocationManager = locationManager;
            this.mLocationCallBack = locationCallBack;
        }

        @Override
        public void onLocationChanged(Location location) {
            if (location != null){
                if(mLocationCallBack != null){
                    mLocationCallBack.onSuccess(location);
                }
                if (mLocationManager != null){
                    mLocationManager.removeUpdates(this);
                }
            }else{
                if(mLocationCallBack != null){
                    mLocationCallBack.onFail("location == null");
                }
            }
        }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {

        }

        @Override
        public void onProviderEnabled(String provider) {

        }

        @Override
        public void onProviderDisabled(String provider) {

        }
    }

    /**
     * 定位结果回调
     */
    public interface LocationCallBack{
        /**
         * 定位成功
         * @param location
         */
        void onSuccess(Location location);

        /**
         * 定位失败
         * @param msg
         */
        void onFail(String msg);
    }

}

使用：

public class MainActivity extends AppCompatActivity {
    private TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textView = (TextView) findViewById(R.id.textview);
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (Build.VERSION.SDK_INT >= 23) {
            //如果用户并没有同意该权限
            if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                //申请权限
                requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 100);
            } else {
                LocationUtil.getCurrentLocation(MainActivity.this, callBack);
            }
        }
    }

    private LocationUtil.LocationCallBack callBack = new LocationUtil.LocationCallBack() {
        @Override
        public void onSuccess(Location location) {
            textView.append("经度: " + location.getLongitude() + " 纬度: " + location.getLatitude()+ "\n");
        }

        @Override
        public void onFail(String msg) {
            textView.append(msg + "\n");
        }
    };

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == 100) {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                LocationUtil.getCurrentLocation(MainActivity.this, callBack);
            } else {
                textView.append("权限没获取！！！"+ "\n");
            }
        }
    }
}